From d9c0d0cad9edc14fdc8d80b9c40e7433ecb5d0b9 Mon Sep 17 00:00:00 2001
From: xxhZs <1060434431@qq.com>
Date: Wed, 25 Oct 2023 12:50:50 +0800
Subject: [PATCH] add readme

---
 integration_tests/clickhouse-sink/README.md | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/integration_tests/clickhouse-sink/README.md b/integration_tests/clickhouse-sink/README.md
index 607621faefeae..a383f3fba5ee4 100644
--- a/integration_tests/clickhouse-sink/README.md
+++ b/integration_tests/clickhouse-sink/README.md
@@ -23,6 +23,8 @@ docker compose exec clickhouse-server bash /opt/clickhouse/clickhouse-sql/run-sq
 - create_mv.sql
 - create_sink.sql
 
+We only support `upsert` with clickhouse' `CollapsingMergeTree` and `VersionedCollapsingMergeTree`
+
 4. Execute a simple query:
 
 ```sh